The severity of the sequelae of neocoronavirus pneumonia depends mainly on the severity of the infection. For patients with mild cases of neocoronavirus pneumonia, the prognosis is good for most of them with reasonable treatment, and there are usually no significant sequelae formed. However, in patients with severe or critical illnesses, the sequelae can be significant because of the severity of the lung infection and the tendency to produce multiple organ damage or failure. For example, in patients with severe pneumonia, the destruction of lung tissue is obvious, and even if the disease is cured, some patients may have interstitial lung changes and sometimes fibrosis in the lungs, and their lung function may be significantly reduced, and shortness of breath after activity may be obvious. Some patients may also suffer from malnutrition and skeletal muscle atrophy, resulting in a decrease in activity tolerance. Sometimes, coagulation dysfunction leads to the formation of deep vein thrombosis in the lower extremities, and the sequelae are quite serious, and some patients even suffer from pulmonary embolism.